Initial commit: Tianpu Zero-Carbon EMS Platform

Full-stack energy management system for Tianpu Daxing campus.
- Frontend: React 19 + TypeScript + Ant Design + ECharts
- Backend: FastAPI + SQLAlchemy + PostgreSQL/TimescaleDB
- Features: PV monitoring, heat pump management, carbon tracking, alarms, reports

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

backend/app/main.py

@@ -0,0 +1,39 @@
+from contextlib import asynccontextmanager
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+from app.api.router import api_router
+from app.core.config import get_settings
+from app.services.simulator import DataSimulator
+
+settings = get_settings()
+simulator = DataSimulator()
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    await simulator.start()
+    yield
+    await simulator.stop()
+
+
+app = FastAPI(
+    title="天普零碳园区智慧能源管理平台",
+    description="Tianpu Zero-Carbon Park Smart Energy Management System",
+    version="1.0.0",
+    lifespan=lifespan,
+)
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["http://localhost:3000", "http://localhost:5173", "http://127.0.0.1:3000", "http://127.0.0.1:5173"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+app.include_router(api_router)
+
+
+@app.get("/health")
+async def health():
+    return {"status": "ok", "app": settings.APP_NAME}